| The micro switch in contact with the treaded rod is there to sense the 'tank empty' postion. Of the other two micro switches, 1 senses the 90% full, the other the 100% full. This is actived by the sping loaded plunger and not the threaded spindel. You'll see than the plunder has an inner and outer portion. When the tank empty or less than 90% full the inner part of the plunger is just touching but not activating the first microswitch furthest away from the tank. When the tank is 90 % full the face of the presses on the plunger and activates the first miro switch. As the tank fills past 90% the outer part of the plunger begins to protrude and activates the second microswitch at the 100% full position, which stops the filling process.
Last edited by Mankster; 11-02-2008 at 09:35.
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